TY - JOUR
T1 - Temperature-independent relative humidity sensing properties of polymer micro-bottle resonators coated with graphene oxide
AU - Li, Hou Chang
AU - Wang, Mengyu
AU - Liu, Bin
AU - Liu, Juan
AU - Wang, Qi
AU - He, Xing-Dao
AU - Chan, Hau Ping
AU - Wang, Danling
AU - Yuan, Jinhui
AU - Wu, Qiang
N1 - Funding information: This work was jointly supported by National Natural Science Foundation of China (NSFC) (11864025, 62065013, 61865013, 62175097); Natural Science Foundation of Jiangxi Province (Grant No. 20212BAB202024 and 20192ACB20031), Key R&D Projects of the Ministry of Science and Technology of China (2018YFE0115700).
PY - 2022/6/15
Y1 - 2022/6/15
N2 - A polymer-based micro-bottle resonator coated with graphene oxide (GO) film is presented to improve the relative humidity (RH) sensing performance. Polymeric material Loctite 3525 was coated onto a quartz fiber and cured by using UV light irradiation and thermal reflow technology. A layer of GO film was prepared on the micro-bottle resonator by the dip impregnation method, which realized a high Q-factor (>104) transmission of energy by appropriately designing a wave-guide resonator coupling. By optimizing the concentration of GO dip impregnation solution, high sensitivity and figure of merit (FoM) of 0.161 nm/%RH and 2.01/%RH were achieved in the RH range of 22–81%. In addition, after high-temperature annealing at 300 °C, the temperature sensitivity decreased by an order of magnitude from 0.793 nm/°C to 0.068 nm/°C, which significantly reduces the cross-sensitivity between humidity and temperature. The proposed resonator has the advantages of being compact in size, low in cost, high sensitivity, and low in temperature crosstalk.
AB - A polymer-based micro-bottle resonator coated with graphene oxide (GO) film is presented to improve the relative humidity (RH) sensing performance. Polymeric material Loctite 3525 was coated onto a quartz fiber and cured by using UV light irradiation and thermal reflow technology. A layer of GO film was prepared on the micro-bottle resonator by the dip impregnation method, which realized a high Q-factor (>104) transmission of energy by appropriately designing a wave-guide resonator coupling. By optimizing the concentration of GO dip impregnation solution, high sensitivity and figure of merit (FoM) of 0.161 nm/%RH and 2.01/%RH were achieved in the RH range of 22–81%. In addition, after high-temperature annealing at 300 °C, the temperature sensitivity decreased by an order of magnitude from 0.793 nm/°C to 0.068 nm/°C, which significantly reduces the cross-sensitivity between humidity and temperature. The proposed resonator has the advantages of being compact in size, low in cost, high sensitivity, and low in temperature crosstalk.
KW - Relative humidity
KW - Micro-bottle resonator
KW - Polymer material
KW - whispering-gallery Mode (WGM)
KW - Graphene oxide
UR - http://www.scopus.com/inward/record.url?scp=85133918587&partnerID=8YFLogxK
U2 - 10.1016/j.measurement.2022.111199
DO - 10.1016/j.measurement.2022.111199
M3 - Article
VL - 196
JO - Measurement
JF - Measurement
M1 - 111199
ER -